Q.

The solubility of iodine in water increases in the presence of

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a

Alcohol

b

Chloroform

c

Sodium hydroxide

d

Potassium iodide

answer is D.

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Detailed Solution

Iodine has the least affinity for water and is only slightly soluble in it. However, it dissolves in 10% aq. solution of KI due to the formation of a complex ion i.e. I3−.I2+KI⇌KI3 or I2+I−⇌I3− complex ion
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